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A number of folks have struggled to use a Mac to update Duet and PanelDue firmware. Earlier this month I wrestled it to the ground and documented a working process on the reprap.org forums. Here it is again for readers of this blog.

install Arduino IDE 1.6.1 in /Applications

open a terminal window and 'cd' into the folder where you have the firmware .bin file

do an 'ls' in /dev to find see the ports before the Duet is connected.

connect Duet to USB and push the erase and reset buttons, then do an 'ls' in /dev again. You want the one that starts with "tty."

Note that you should replace the two strings in bold to match your port # and the firmware version you are updating.

Tested on OSX 10.10.5 and 10.11 (Yosemite)

UPDATE: here is a simple shell script that makes this much simpler. You need to change the port information and the RepRapFirmware version information. Place this script, the bossac application and the firmware .bin file in the same folder and then execute from a terminal window:

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